After Swift trigger of the V404 Cyg (Barthelmy et al., GCN #18716) we have observed the object with the RATAN-600 radio telescope. The fluxes are detected 22 +-5, 33+-5, 45+-10 mJy at 4.6, 8.2, and 11.2 GHz respectively at MJD57379.44 (23 Dec). The spectrum is well fitted by the power law with positive spectral index: S[mJy] = 6.5 nu^+0.8 [GHz], usual for optically thick radio emission in the beginning of a flare in the microquasars. We will continue the observations.